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lina2011 [118]
3 years ago
13

What is -5 + 12 - 4​

Mathematics
2 answers:
balu736 [363]3 years ago
8 0

Answer:

3

hope this helps

nata0808 [166]3 years ago
8 0

Answer:

3

Step-by-step explanation:

A negative plus a positive adds closer to zero, so negative five plus twelve is seven. A positive minus a positive is going closer towards zero, so there.

So, your answer is three!

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What is the slope of this equation 1/2x - 1/3
viktelen [127]
It is not linear, so therefore no slope
5 0
3 years ago
Read 2 more answers
8x+x^2-2y-64+y^2=0 standard form with explanation
xz_007 [3.2K]
X² + 8x +y² - 2y -64 =0
We see that the equation has x² and y² . Also we see that coefficients in front of x² and y² are equal. So this is an equation of the circle.
(x² + 8x) +(y² - 2y) -64 =0
(x² + 8x) +(y² - 2y) = 64
We need to complete square for x and y groups, that means it should be written in form (a+b)² or (a-b)².
Expressions in parenthesis we will write as a²+/-2ab+b², to write it after as (a+/-b)², because  a²+/-2ab+b² = (a+/-b)²

(x² + 2*4x) +(y² - 2*1y) = 64
(x² + 2*4x+4²) +(y² - 2*1y+1²) = 64+4²+1²
(x+4)² + (y-1)²= 81 Sometimes this is called a standard form of the circle.
(x+4)² + (y-1)²= 9² Sometimes it is required to write like this.

And if you are studying circles,ellipses  and hyperbolas, the standard form should look like
\frac{(x+4)^{2}}{9^{2}} + \frac{(y-1)^{2}}{9^{2}} =1






8 0
2 years ago
Jamal bought 4 shirts in Massachusetts. The sales tax is 5%. If the price before tax for each shirt was $16 how much money did j
erastovalidia [21]
Total would be $67.2! Each shirt would cost $16.8 with tax!
4 0
3 years ago
Which equation is satisfied by all of the plotted points?
Lubov Fominskaja [6]
A. y=2x 
because slope-intercept form is y=mx+b. m= slope & b= y-int. The y-int is at the origin, so therefore y=0. The slope is 2, so therefore the answer is y=2x
8 0
3 years ago
30 points.Please answer with explanation​
Bas_tet [7]

Answer:

m∠1 = 142

Step-by-step explanation:

38 + m∠1 = 180

m∠1 = 142

5 0
3 years ago
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